Abstract: A console is for an ophthalmic surgical system for operating a handpiece driven by a work fluid. The work fluid is supplied to a respective work chamber depending on the switching states of work valves. The valves are switched between a switched-on state and a switched-off state by a respective drive unit by respective electrical switching signals being applied to the drive units. Each valve switches from the switched-off switching state into the switched-on switching state during a switch-on time delay and switches from the switched-on state to the switched-off state during a switch-off time delay. The switching signals at least intermittently adopt the switch-on electric potential concurrently during a difference time period if the switch-on delay is longer than the switch-off delay, with a length of time of the difference period arising on the difference between the switch-on delay and the switch-off delay of the valves.

Abstract: A telephone answering system and method for playing particular different greeting messages to different callers. When an incoming call is received, either caller-ID is decoded, or the caller's identification is determined some other way if possible, and if the particular caller's identification is on a list, a special message can be played for that caller if such a message as been stored and is active. Any other caller receives a different message, usually a default greeting message. Special messages can be date/time stamped to die or change after particular dates or times. Messages and caller identification can be loaded into the system remotely.